humidity

noun

hu·​mid·​i·​ty hyü-ˈmi-də-tē 

yü-

plural humidities

: a moderate degree of wetness especially of the atmosphere compare relative humidity

Synonyms of humidity

• moisture

Examples of humidity in a Sentence

the humidity of the region

It's not the heat that will get you—it's the humidity.

The temperature is 67 degrees with humidity at 75 percent.

an area of low humidity

Recent Examples on the Web

Athletes should slowly build conditioning when faced with changes in climate such as heat and humidity. — Nicole Williams, AJC.com, 6 July 2026

Temperatures will climb back into the mid-to-upper 80s, though humidity will still be noticeable. — Baltimore Sun Staff, Baltimore Sun, 6 July 2026

The addition of high humidity made conditions feel even hotter. — Dan Avery, CNBC, 6 July 2026

Conversely, decks that are too dry will swell and shrink with humidity, requiring maintenance to prevent splitting. — Timothy Dale, Better Homes & Gardens, 6 July 2026

Word History

First Known Use

15th century, in the meaning defined above

Phrases Containing humidity

• absolute humidity
• relative humidity

Rhymes for humidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

humidity

noun

hu·​mid·​i·​ty hyü-ˈmid-ət-ē 

yü-

plural humidities

: moisture, dampness

especially : the amount of moisture in the air

Medical Definition

humidity

noun

hu·​mid·​i·​ty hyü-ˈmid-ət-ē, yü- 

plural humidities

: a moderate degree of wetness especially of the atmosphere see absolute humidity, relative humidity